This is a Magento CDN module, built to use when you need scale multiple Magento instances horizontally, avoinding the need of tools like s3fs, rsync, etc to keep the media folder in-sync on every instance.

• Store product images on CDN;
• Store merged CSS and Javascript files on CDN;
• Upload product images directly to CDN;

• Amazon Simple Storage Service

1. Copy all files to the Magento directory;
2. Clean your cache;
3. Configure your Amazon S3 credentials at System > Configuration > MageFM > CDN;
4. Configure your Base Media URL at System > Configuration > General > Web;

It is recommended to create a specific IAM userfor handling files on S3. To avoid permission problems, use the following policy:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Stmt1393288415000",
      "Effect": "Allow",
      "Action": [
        "s3:DeleteObject",
        "s3:GetObject",
        "s3:GetObjectAcl",
        "s3:PutObject",
        "s3:PutObjectAcl",
        "s3:ListBucket"
      ],
      "Resource": [
        "arn:aws:s3:::bucket-name",
        "arn:aws:s3:::bucket-name/*"
      ]
    }
  ]
}

Don't forget to change the bucket-name.